US Bridges

Butterfly Vly RD over E Br N Fk Feather River

Fair

Plumas County, California · 0.5 MI Se/O SR 70 · Structure no. 09C0032

Built
1950
75 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
291 ft
5 main spans
Daily traffic
20
2019 count
Owner
County
County Highway Agency

About this bridge

Butterfly Vly RD over E Br N Fk Feather River is a steel stringer/multi-beam or girder carrying Butterfly Vly RD over E Br N Fk Feather River in Plumas County, California. It was built in 1950, so it is 75 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 20 vehicles a day, projected to reach 53 by 2044. The structure is 291 ft (88.7 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesButterfly Vly RD
CrossesE Br N Fk Feather River
Location0.5 MI Se/O SR 70
RouteCounty Highway 0
CountyPlumas County
StateCalifornia
Coordinates40.01894, -121.06841
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length291 ft (88.7 m)
Longest span62 ft (18.9 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic53 by 2044
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Butterfly Vly RD over E Br N Fk Feather River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Butterfly Vly RD over E Br N Fk Feather River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does Butterfly Vly RD over E Br N Fk Feather River carry?

About 20 vehicles per day (2019 count).

How long is Butterfly Vly RD over E Br N Fk Feather River?

The structure is 291 ft (88.7 m) long with a longest span of 62 ft (18.9 m) and a deck 17 ft wide.

Who owns Butterfly Vly RD over E Br N Fk Feather River?

It is owned by the County Highway Agency.